#include <stdio.h>
float average(float *p,int n)
{
	float sum=0;
	for(int i=0;i<n;i++)
		sum+=p[i];
	return sum/n;
}
int main()
{
	float arr[]={1.2,2.3,3.4,4.5,5.6};
	float *p=arr;
	int n=sizeof(arr)/sizeof(arr[0]);
	float avg=average(p,n);
	printf("The average is: %.2f\n",avg);
	return 0;
}